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Thermal Energy

Thermal Energy. Related to particle movement and how atoms are bound together More movement of particles = higher kinetic energy = higher temperature Thermal Energy = energy in the form of heat. Where is Thermal Energy produced?.

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Thermal Energy

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  1. Thermal Energy

  2. Related to particle movement and how atoms are bound together • More movement of particles = higher kinetic energy = higher temperature • Thermal Energy = energy in the form of heat

  3. Where is Thermal Energy produced?

  4. Thermal Energy transfers (moves) as heat from a material at a higher temp. to a material at a lower temp. • **Heat Transfer** • Examples: touching cup of hot chocolate, sticking hand in snow

  5. Heat transfer occurs in 3 ways: Conduction, Convection, Radiation

  6. Measuring Thermal Energy • Different materials need different amounts of heat to produce changes in temp. • Ex: swimming pools, aluminum

  7. Specific Heat (C) = amount of energy it takes to raise the temp. of an object/substance • Units: J/kg.K • Ex: Swimming pool = high specific heat, silver = low specific heat

  8. Q = m x T x C • Q = change in thermal energy (Heat loss or gain) (J) • M = mass (kg) • T = change in temp. (Final – Beginning) • C = Specific Heat (always given)

  9. 1) A 32g silver spoon cools from 600C to 200C. What is the change in thermal energy? (Specific Heat of Silver = 235)

  10. 2) A 0.38 kg drinking glass is filled with a hot liquid. The liquid transfers 7032 J of energy to the glass. If the temperature of the glass increases by 22K, what is the specific heat of the glass?

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